Guillaume Costeley was born in Normandy in 1530. He occupied the function of organist at the cathedral of Évreux, and also became official composer to Charles IX. The status and quality of Costeley's music warrant his place amongst the principal masters of the Late Renaissance. In spite of being an organist and church musician, it is primarily thanks to his secular oeuvre that he is recognized today, in particular for one piece: the emblematic Mignonne allons voir si la Rose, written on a text by Ronsard.